Moonstone mike i'm not saying you have to remove the front bumper to fit the cooler but personally if i had to remove & refit it again i would, my front bumper comes off in less than 10 mins, once the grille is off its only 2 bolts by the headlights & turn a plastic lug at each end of the bumper, just means youv'e got more room & you don't have to jack the car up so much.

Simon.